5.
Which of the followings changes with increase in temperature?
7.
Two elements X (atomic weight = 75) and Y (atomic weight = 16) combine to give a compound having 75.8% of X. The formula of the compound is:
8.
How many moles of electrons weigh one kilogram?
9.
If 1/6 in place of 1/12 mass of carbon atom is taken to be the relative atomic mass unit, the mass of one mole of a substance will:
10.
2 mole of ethyl alcohol are present with 6 mole of water. The mole fraction of alcohol is:
12.
Two solutions of a substance (non-electrolyte) are mixed in the following manner. 480 mL of 1.5 M of 1 solution with 520 mL of 1.2 M of II solution. The molarity of final solution is:
14.
Which has maximum number of atoms?
15.
A solution of HC1 containing 0.659 g / mL and another solution of acetic acid containing 0.04509 g/ml., then:
16.
In a compound C, H, N atoms are present in 9 : 1 : 3.5 by weight. Molecular weight of compound is 108, its molecular formula is:
18.
The amount of oxalic acid (hydrated) required to prepare 500 mL of its 0.1 N solution is:
19.
Density of a 2.05 M solution of acetic acid in water is 1.02g / mL. The molality of the solution is:
20.
Read the question given below
22.
Read the question given below
23.
The least number of molecules are contained in :
25.
Which has the maximum number of atoms?
29.
The number of atoms in 558.5 g of Fe (at.wt. 55.85) is:
